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Where is switch MAC address ?

Posted on 2013-06-12
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Last Modified: 2013-06-13
Hi Anyone can give me a suggestion? Each switch has a mac address what belongs to it when it is make in factory. Usually the mac address in any devices is at NIC, such as PC, router. So where is mac address in switch ?
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Question by:EESky
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by:Thomas Grassi
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by:Rsilva98
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if you can logon to the switch you will have that information, otherwise it could be on the bottom or back of the switch. It depends of the model that you are using.
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by:Tymetwister
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Did you check for any label on the outside of the switch? Often times it's printed right on a label on the switch.

The harder way is to get a program where you can ssh into the switch, like Putty  (http://www.putty.org/)  and remote into the IP address of the switch, and run a command to show the mac address, depending on the type of switch would depend on the command you run.
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by:EESky
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Thank you for reply. If it is L3 switch, we setup vlan interface. the vlan interface should have mac address. So, how/where does the vlan interface get mac address ? from the pool of mac address of the switch ? or create virtual mac address ?
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by:Tymetwister
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MAC addresses are simply tied to the physical hardware that the switch is built with, so it always looks at and reads it directly from the hardware itself.
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by:EESky
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To Tymetwister, You meant one switch has only one mac address ? if so, all interface of vlan use the mac address in L3 switch? thanks
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by:Darr247
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Ping the IP address of the interface, then use
arp -a
which will list the IP and associated physical (MAC) addresses in the arp cache.
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Rick_O_Shay earned 250 total points
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A switch usually has one base mac address, which is printed on the switch's label, and then may have one for each port and VLAN as well.
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by:EESky
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you are right, Rick_O_Shay. Each port has its own mac address,
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